On my last trip to the US I flew thru Chicago and had to catch a connecting flight. Of course for this I needed to switch terminals. I landed at the international terminal and flew with United Airlines from another terminal. There is a short walkway underneath the airport to get to the terminal.
And this is where I took this photograph. I stood at the exact same spot for about 10 minutes because the light is always changing. There were a lot of people using this passage to get off or on an airplane so I also had to wait until I had a decent composition.
I took around 30 photographs and this is the only one I really like! I cannot really tell you why I like this the most, I just went home and when I looked at all the photos taken there, I knew that this is the one.